... provide many various styles of moulded rubber parts for Auto industry,plumbing industry,IT, household parts, etc ... make many styles of the O- rings with various sizes and colors, such as O-ring, U-ring, ... to hardness Can be ±5 shore A, for some special products, can reach ±3 shore AColor ... weeksLead time for special moldAbout 20 to 30 daysMOQSmall orders are wecomed Standard size black rubber O-ring